It is the ratio of the speed of light in a vacuum (c) to the speed of light in this medium (v): n = c / v. The bending of a light as it crosses the boundary into a different medium is determined by its refractive index, or how much the light is slowed down in the new medium. We see objects breaking at the boundary between media of different density because of refraction. Light rays are bent, or refracted, because light travels at different speeds in different media. Unless the light ray meets the boundary at exactly 90Â°, the direction of travel will change and the light ray is bent..
Want to know How tall is Alan Jackson? Ok, here we are. Find the answer of this question. Alan Jackson height is 6' 4 (193cm)
Samuel L. Jackson's Height is 6ft 1Â½in (186.69cm) Peak height was 6ft 2Â¼(188.595cm) I think he can still clear 6ft1 today when he stands for a measurement and that scene with Laurence Fishburne rules out anything less than a strong 6ft2 in his prime.